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Hex Code Dump Mode
The HomeWriter- has a special feature that makes it easy for
experienced printer users to find the causes of problems. Called the
hex code dump mode, it gives a printout of exactly
the printer.
Turn on this mode by turning on the printer while holding down
both the FF and LF buttons. The printer responds by printing the
words HEX CODE DUMP (CURSOR UP MODE). Then, when you
run a program, either an applications program or one you have writ-
ten in any programming language, the HomeWriter- prints one or
more lines. Each line has two parts: the hexadecimal codes (up to 16
numbers) and the guide section (16 characters at the end of
The hexadecimal numbers are the codes received by the printer, and
the guide section helps you find a certain place in the list of codes. Each
character in the guide section corresponds to one of
code is for a printable character, that character is printed. If the code is
for a non-printable character (such as the codes for line feed,
expanded printing, or carriage return), a dot is printed.
Therefore, if you run the following BASIC program while your
HomeWriter- is in the hex code mode, you produce the printout
you see below it. The printer will print all but the last line and then
stop. Press the ON LINE button to make
10 OPEN9,4
20 PRINT#9,CHR$(14)"EXPANDED"
30
PRINT#9,CHR$(18)"REVERSED"
40
CLOSE9
HEX CODE DUMP (CURSOR UP MODE)
0E 45 58 50 41 4E 44 45 44 0D 12 52 45 56 45 52
53 45 44 0D
You don't have to understand hexadecimal numbers to use them. In
Appendix A you can find the decimal equivalent of each hexadecimal
number, and Appendix B gives the meaning of the non-printable
codes. An explanation of this printout will put you on the right track
for using the data dump mode.
E-2
what
the
printer print the last line.
the
.EXPANDED..REVER
SED.
codes reach
line).
each
codes. If the
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